package regtest;

import java.util.regex.Pattern;

public class RegTest {

  public static void main(String[] args) {
    //
    String input = "_(___";
    try {
      Pattern.compile(input);
    } catch (Exception e) {
      System.out.println("false");
      System.exit(1);
    }
    System.out.println("true");
  }
}
